Thank you all.
This is obviously an area which is (to non-geeks like me) totally non-intuitve! Sending email attachments - to myself and others - worked ONCE', then failed thereafter. Even reducing to one attachment only, produced a 'failure due to excess size' type response. Possibly, this is made worse by being limited to low speed tablet contact, but as one of the much heralded features of these devices, it seems odd that this function is so awful to implement.
Rather foolishly, I attempted to transfer via Photo bucket and Picasa ... Head-banging with a hammer is preferable!!
Maybe, in 10 years or so, these things will become simple to use?